MONARCH, n. A person engaged in reigning. Formerly the monarch ruled, as the derivation of the word attests, and as many subjects have had occasion to learn.
Source: The Devil's Dictionary, 1911.
-- Ambrose Bierce, (Jun 24 1842-1914), US journalist, short-story writer; He was a noted wit, satirist and sardonic short story writer who disappeared while covering the Mexican revolution.